This dataset includes 42,120 GeoTIFFs (spatial resolution: 12 km) that represent decadal (15 decades between 1950-2099) means of monthly summaries of the following variables (units, abbreviations and case match those used in the source daily resolution dataset). There are three distinct groups of variables: Meteorological, Water State, and Water Flux.

Meteorological Variables

- tmax (Maximum daily 2-m air temperature, °C)

- tmin (Minimum daily 2-m air temperature, °C)

- pcp (Daily precipitation, mm per day)

Water State Variables

- SWE (Snow water equivalent, mm)

- IWE (Ice water equivalent, mm)

- SM1 (Soil moisture layer 1: surface to 0.02 m depth, mm)

- SM2 (Soil moisture layer 2: 0.02 m to 0.97 m depth, mm)

- SM3 (Soil moisture layer 3: 0.97 m to 3.0 m depth, mm)

Water Flux Variables

- RUNOFF (Surface runoff, mm per day)

- EVAP (Actual evapotranspiration, mm per day)

- SNOW_MELT (Snow melt, mm per day)

- GLACIER_MELT (Ice melt, mm per day)

Monthly summary functions, or how the daily frequency source data are condensed into a single monthly value, are as follows:

- Sum: pcp, SNOW_MELT, EVAP, GLACIER_MELT, RUNOFF

- Mean: tmin, tmax, SM1, SM2, SM3

- Maximum: IWE, SWE

The model-scenario combinations used to represent various plausible climate futures are:

- ACCESS1-3, RCP 4.5

- ACCESS1-3, RCP 8.5

- CanESM2, RCP 4.5

- CanESM2, RCP 8.5

- CCSM4, RCP 4.5

- CCSM4, RCP 8.5

- CSIRO-Mk3-6-0, RCP 4.5

- CSIRO-Mk3-6-0, RCP 8.5

- GFDL-ESM2M, RCP 4.5

- GFDL-ESM2M, RCP 8.5

- HadGEM2-ES, RCP 4.5

- HadGEM2-ES, RCP 8.5

- inmcm4, RCP 4.5

- inmcm4, RCP 8.5

- MIROC5, RCP 4.5

- MIROC5, RCP 8.5

- MPI-ESM-MR, RCP 4.5

- MPI-ESM-MR, RCP 8.5

- MRI-CGCM3, RCP 4.5

- MRI-CGCM3, RCP 8.5

The .zip files that are available for download are organized by variable. One .zip file has all the models and scenarios and decades and months for that variable.

Each GeoTIFF file has a naming convention like this: {climate variable}_{units}_{model}_{scenario}_{month abbreviation}_{summary function}_{decade start}-{decade end}_mean.tif

Each GeoTIFF has a 12 km by 12 km pixel size, and is projected to EPSG:3338 (Alaska Albers).